Eleotbio light



no Model.)

B. T. STARR.

ELECTRIC LIGHT SPEGULUM.

Patented June 17, 1.884.

I INVENTUR I EZI;,T Sta/r7,

WITNESSESZ @4 6L By Z268 .dtforney N. PETERS Pbuminaa n m. W-ubingiafl. D. c.

ilnrrnn STATES PATENT @rricn.

ELI T. STARR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY DIRECT.

AND MESNE ASSIGNMENTS, TO THE S. S. WVHITE DENTAL MANUFACTUR- ING COMPANY, OF SAME PLACE.

ELECTRIC-LIGHT SPECULUM.

SPECIFICATION forming part of Letters Patent No. 300,525, dated June 17, 1884.

Application filed February 11, 1864. (No model.)

To all 2071 0122, it may concern: thereby be out of the line of vision of the 50 Be it known that I, ELI T. STARR, of the surgeon or operator looking through the speccity and county of Philadelphia, in the State ulum. The globe contains a suitable filament of Pennsylvania, have invented certain new or burner, ca carbon filament, for in- 5 and useful Improvements in Electric-Light stancesealed therein, the globe being, by

Speculums, of which the following is a specifipreference, a vacuum-globe, as is common in 5 5 cation. the construction of i ncandescent electric lamps.

'" My invention relates to speculums or inst-ru- The incandescent portion of the burner or ments for facilitating the examination of the filament is held between the lamp-terminals IO cavities of the human body, and particularly c, as usual, for instance, and these termito speculums for use in obstetrical and siminals outside the globe are connected with the 6 lar operations, such as the examination of the terminals of the circuit-wires (Z (I, so as to sewombs of women. curely retain the lamp in place at the front The object of my invention is to provide a end of the frame B. I speculum carrying an electric lamp which may The manner of connecting the lamp with the be inserted into the cavity to light it up, and circuit-wires is immaterial, so long as a secure 6 7 thereby enable the surgeon to fully, clearly, and suitable connection is made. The circuitand accurately examine the interior of the wires are preferably run through the specucavity or passage and walls thereof. him to the lamp-terminals at the front end of The subject-matter claimed is particularly the lamp-carrying frame, and lie in suitable pointed out at the close of the specification. longitudinal grooves in the side bars or rods,

In the accompanying drawings I have shown B B, of said frame, so as to be out of the way. my improvements as embodied in the best way Said frame B is preferably made of metal, and now known to me. Some of my said improveis adjustable, as before stated, so that it may 2 5 ment-s may be used without the others. be moved back and forth and turned axially In said drawings, Figure 1 is a longitudinal to throw the light-rays or concentrate them at 7 5 section through the speculum. Fig. 2 is a the desired point. lhe circuit-wires are prefsection therethrough on the line 2 2 of Fig. 3. erably the usual flexible insulated wires.

Fig. 3 is a section through a portion of the Instead of the casing or guard A being made 0 device 011 the lines 3 3 of Fig. 2; and Fig. 4 of hard rubber, for example, it may be made is a view of the lamp-carrying frame of the of glass suitably annealed, so that not only speculum, removable and adjustable relatively the cavity in front of the lamp maybe exposed, to the casing or guard thereof. but also the cavity throughout the whole dis- A preferably tubular casing or guard, A, tance traversed by the speculum, or to the 3 5 having a preferably diagonally or obliquely extent to which the speculum may be inserted.

cut end, a, as usual, so as to have an opening The outer or butt end of the speculum may 3 or open space at the side of thecasing, is be provided with suitable devices for readily provided with a reflecting, mirrored, or polmaking and breaking the circuit; but the ished surface, a. This casing or guard may be organization of such devices may be effected 0 of hard rubber (or of other suitable material, in so many different ways that I have deemed but a non-conducting material is almost essenit unnecessary to show such make-and-break o tial) in order to avoid painful heating and devices in connection with my improved insufi'ering to the patient. Aframe, B, is fitted strument. Many forms of such devices are so as to be adjustable back and forth, and also well known to electricians. It will, of course,

5 axially, in said casing, and carries at its front be understood that a suitable battery or genend an incandescent electric lamp, 0. The erator will be employed to furnish current to 5 lamp-globe is preferably curved or semicircuthelamp, and that the circuit-wireslead therelar, so as to lie behind a ring or abutment, b, from to the speculum. constituting the front end of the frame B, and From the above description of my invention it will be seen that I have provided a speculum for the use of surgeons by which they may examine the cavities of the body with accuracy and at any time, night or day. The lamp gives a powerful light, which may be directed to the point desired, while there is virtually no heat. The examination can therefore be made without danger or pain to the patient. The organization is such, also, that there is no glare in the eyes of the operator.

I am aware of the patent of Nitze, of July 29, 1879, and do not claim herein anything shown in said patent. In that patent there are shown and described several forms of electriclight speculums; but the casing inclosing the electric light is of metal, and a water-circulating arrangement is used to prevent the heating of the body when the speculum is introduced into the cavity therein. I make use of no such arrangements, but, on the contrary, dispense entirely with the water-circulating device by the employment of a nonconducting casing for the electriclight or lamp.

I claim herein- 1. An insulating and heat non-conducting 'casing-such as a hard-rubber casingcontaining and carrying an incandescent electric lamp, substantially as described.

2. An insulating and heat non-conducting casingsuch as a hard-rubber casing provided with a reflecting lining or interior surface, and containing and carrying an incandescent electric lamp, and said casing being also provided with an opening therein to permit the passage of the light of the lamp, substantially as described.

the passageof the light-rays of said lamp, v

substantially as described.

4. The semicircular incandescent electric lamp, consisting of the semicircular vacuumcasing and the inclosed filament or incandescent body sealed therein, substantially as described.

5. Atubular transparent speculum-casing such as a glass casing--substantially as described, whereby the cavity in which the speculum is inserted may be inspected in different directions through the walls of the casing, substantially as described.

6. A tubular transparent speculum casing or guard-such as a glass casing or guard carrying an incandescent vacuum or inclosed electric lamp, substantially as described.

7. An electric-light speculum, consisting of a tubular or open casing fitted near its front end with a shoulder or abutment projecting into the bore of the casing, and an incandescent electric lamp fitted in front of said abutment, so as to be out of the line of vision'of the operator in looking through said casing, substantially as described.

In testimony whereof I have hereunto subscribed my name this 8th day of February, A. D. 1884.

ELI" T. STARR.

Witnesses:

SAMUEL E. STARR, P. GEO. VINSON, Jr. 

